Marinco Insulated Distribution Stud, Dual 1/4″ - (Black)These distribution studs are ideal for heavy duty connections. The studs are tinned copper and available in single and dual isolated modules. Color coded red positive, black negative, bases for easy identification. The dual stud module is ideal for outboard engine connections. Each stud comes with both a red and black snap on cover to meet ABYC specifications. UPC: 870216003832 Model Number: IS 6MM 2 DSP